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产地: 中国
提交时间: 2009/11/06
提交者: chuntsotso
修改: 2009/11/06
Environmentalists generally agree that hardwood is a carbon-neutral substance. While living, trees sequester and store carbon in their cellular structure. In fact, nearly 50 percent of the dry weight of a tree is carbon. Because hardwoods grow to be large trees, they lock in substantial amounts of carbon. However, as the tree becomes overly mature it start to release carbon, thus sustained harvesting and processing of mature trees sequesters carbon as finished wood products and start the sequestration of carbon in the form of new trees.
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